Import Arc history in Firefox

arcHistoryToFirefox.md

No good reason why this had to be so tricky:

• Install Export Chrome History extension in Arc
• Export history to JSON. Choosing the forever option does actually export ALL the history in Arc
• Install History Export for firefox
• Optional: Export Firefox history, to see what the json looks like
• Make the Arc history match what firefox expects. I used this javascript to convert it:

arcHistory.map(item => {
    return {
        id: item.id,
        url: item.url,
        title: item.title,
        lastVisitTime: Math.floor(item.lastVisitTime),
        visitCount: item.visitCount,
    }
})

• Not much conversion required, but still, I didn't want firefox to crash because there was extra data, or floating point timestamps
• Import the resulting json file using History Export

It wouldn't work for me without converting the JSON. Here is a complete script for converting the history.json.

const fs = require('fs')

const history = fs.readFileSync('history.json')
const arcHistory = JSON.parse(history)
const data = arcHistory.map(item => {
    return {
        id: item.id,
        url: item.url,
        title: item.title,
        lastVisitTime: Math.floor(item.lastVisitTime),
        visitCount: item.visitCount,
    }
})

fs.writeFileSync('ff-history.json', JSON.stringify(data))

Thanks!

It wouldn't work for me without converting the JSON. Here is a complete script for converting the history.json.

const fs = require('fs')

const history = fs.readFileSync('history.json')
const arcHistory = JSON.parse(history)
const data = arcHistory.map(item => {
    return {
        id: item.id,
        url: item.url,
        title: item.title,
        lastVisitTime: Math.floor(item.lastVisitTime),
        visitCount: item.visitCount,
    }
})

fs.writeFileSync('ff-history.json', JSON.stringify(data))

Confirmed working. Thank you.

Thanks for this. I just did a regex search and replace to get rid of the decimal points in the visitTime and lastVisitTime values of the original file, which also worked.